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GRUNDFOS DISTRICT HEATING

GRUNDFOS DISTRICT HEATING

Reliable, efficient, intelligent

RELY ON 50 YEARS OF EXPERIENCE AND CUTTING EDGE TECHNOLOGYGrundfos is one of the world’s leading pump manufacturers and has been renowned for its innovative and reliable solutions since the humble beginnings in 1945.

Today, we produce more than 16 million pump units every year for a wide range of application areas – from circulators for heating and air conditioning to industrial pumps and solutions for water supply, wastewater and District Heating.

Our vast experience with District Heating dates back 50 years. Scandinavian district heating is the most efficient and reliable heating system in the world, and Grundfos technology is a proud part of that legacy.

Worldwide production

Grundfos is represented by 80 companies in more than 55 countries and owns production facilities all over the world. This makes our products and services easily accessible to customers globally.

We cover the whole system

In addition to pumps, Grundfos produces standard and submersible motors as well as state-of-the-art electronics for monitoring and controlling pumps.

Global presence: Wherever a district heating pumping solution is needed, there is a Grundfos company nearby, ready to assist you

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DISTRICT HEATING OVERVIEW

MAIN PUMPS

FLOW FILTER PUMPS

WATER TREATMENT PUMPS

BOILER SHUNT PUMPS

LULL HEAT PUMPS

FLUE GAS ECONOMISER

CHP POWER PLANT

BOILER HOUSEBOILER HOUSE

DIRECT CONNECTION

PLATE HEAT EXCHANGE

MIXING LOOPS

PRESSURE HOLDING SYSTEM

DISTRIBUTION PUMPS

SUB-STATION

CONSUMER CONNECTIONS

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THE HEART OF YOUR HEATING SYSTEMMain pumps are the beating hearts of any district heating system. They are charged with the challenging task of pumping hot water from the power plant or boiler house to the sub-stations. As the water needs to be pushed through miles and miles of piping before reaching its destination , strength and reliability are everything.

Maximum power, minimal maintenance

Our main pumps are built to perform and built to last. Decades of experience and dedication to craftsmanship allow us to offer

you a solution that offers maximum power, while demanding an absolute minimum of maintenance. To ensure you the most energy efficient solution, we recommend the use of speed-regulated pumps that adjust to constantly changing heating demands. Depending on your preferences and the motor size of the pump, our main pumps can be controlled via built-in or external VFD.

Grundfos HS Field-tested to perfection, the Grundfos HS horizontal splitcase pump is an unstoppable workhorse. The HS delivers high efficiency performance and low life-cycle costs. The highly reliable hydraulic design combined with the service-friendly layout of the splitcase housing make this the ideal main pump for your district heating system.

MAIN PUMPS

PUMP TYPE OPERATING RANGE FEATURES AND BENEFITS

Split caseHS

» Robust design » Double volute casing to reduce

radial load » Removable bearing housing

for easy maintenance » PN 10, 16, 25

End suctionNKG/E

» Dimensions according to EN and ISO standards

» Robust design » EN 12756 shaft seal » PN 10, 16, 25

In-line TP Series 400

» Low energy consumption » Adaptation to existing operating

conditions » Simple installation » PN 10, 16, 25

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KEEP SYSTEM PERFORMANCE HIGH FOR DECADES

BOILER SHUNT PUMPS FLOW FILTER PUMPS

Boiler shunt pumps play an important role in maintaining the performance of the system. By re-circulating a certain amount of hot water from the flow pipe into the return pipe or directly into the boiler, the boiler shunt pump ensures that the temperature difference is never above acceptable levels. This is achieved by coupling an external temperature sensor to the boiler shunt pump. The result is reduced tensions in the boiler and the elimination of condensation, leading to a significantly prolonged system lifetime.

In a district heating system, water quality is paramount. To ensure that the quality lives up to the given standards, it is necessary to continuously filter the water. This is done by means of flow filter pumps that recirculate approximately 10% of the total typical flow across a strainer, removing all impurities.

By choosing an intelligent Grundfos solution such as the TPE in combination with a differential pressure sensor, you can measure pressure loss across the strainer and thereby continuously secure the design flow.


End suctionNBG

» Standard dimensions according to EN and ISO standards

» Compact design » Standard motor » EN 12756 shaft seal

In-line TP Series 100

» Simple installation » Low energy consumption » Liquid temperature range

up to +150°C


End suction NB/E


» Compact design » Built-in frequency-controlled

MGE motor » EN 12756 shaft seal

In-line TP/E


conditions » Built-in frequency-controlled

MGE motor » Simple installation

boiler shunt pump

flow pipereturn pipe

boiler

Grundfos CUE Grundfos CUE represents one of the most comprehensive and versatile ranges of frequency converters currently on the market. Pre-programmed for Grundfos pump families, CUE requires a minimum of configuration to ensure the automatic control of pump speed and the energy savings that follow. Quick set-up, easy commissioning, and optimal performance come as standard. Installation advice: for increased lifetime and reliability, the converter should be placed at a safe distance from the boiler shunt, which gets very hot.

Grundfos TPE 1000 and 2000 series Adaptable, efficient and intelligent, the TPE in-line pumps are built to match any district heating need. All components are tailor-made and optimised for energy efficiency, resulting in energy savings of up to 50% compared to conventional pumps. The TP comes equipped with the highly efficient IE3/IE4 Grundfos Blueflux® motor and features an integrated frequency converter to ensure maximum efficiency at all times.

WATER QUALITY FIRST

main return pipe

flow filter

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KEEP IT FLOWING DON’T WASTE ENERGY

LULL HEAT PUMPS FLUE GAS ECONOMISER

Even when a boiler is on standby, the flow through the boiler system must continue. This way, the system will be able to resume operation promptly and easily when needed without having to reheat the water first. By utilising a small temperature-regulated lull-heating pump, you ensure a quick start-up and optimal protection of your boiler.

At Grundfos, we can provide you with a full range of lull heat pumps that will keep the water flowing effortlessly for years and years.

The overall efficiency of a boiler is heavily influenced by the temperature level of the boiler flue gas. The lower the temperature, the higher the efficiency. By installing an economiser between boiler and chimney or building it into the boiler exhaust, the flue gas can be cooled and the absorbed energy put to good use. This will reduce your fuel costs by up to 15% compared to a traditional operation without an economiser.


MAGNA1

» Low energy consumption. Complies with the EuP 2013 and 2015 requirements

» No maintenance and long lifetime » Constant curve / constant speed duty » Constant pressure control

End suction NB/E


» Compact design » Standard motor » EN 12756 shaft seal


End suction NB/E


» Compact design » Built-in frequency controlled

MGE motor » EN 12756 shaft seal

In-line TPE


conditions » Simple installation » Built-in frequency controlled

MGE motor

flow pipe

closed valve

return pipe return pipe

exhaust gasboiler on stand by

Grundfos NBE The NBE is an extremely reliable end-suction pump designed for the most demanding environments. Grundfos quality inside and out, it offers high-corrosion resistance and features our high efficiency e-motors carrying the Grundfos Blueflux® label. Thoroughly tested before delivery, the NBE guarantees high performance and low cost of ownership.

Grundfos MGE motors All Grundfos E-pumps feature the groundbreaking MGE motor. The ‘E’ stands for energy savings and electronic control, but with its robust aluminium housing, the motor provides superb reliability as well. E-pumps with MGE motors offer the functionality of a standard frequency converter, but adds a whole range of extra feature to increase performance and durability.No motor derating / Automatic motor efficiency optimisation / Cooling of frequency converter by motor fan / Low acoustic noise from motor

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HANDLING THE PRESSURE INTELLIGENT PUMPING

PRESSURE HOLDING SYSTEMS DISTRIBUTION PUMPS

No two district heating systems are the same and even throughout a single system, demands vary constantly. In order to secure and maintain the right pressure in all parts of the system at all times, a pressure holding system is necessary.

With a Grundfos pressure holding system, you are ready to take on any challenge. We make sure the system maintains static pressure, so your end users in tall buildings are guaranteed sufficient amounts of water with sufficient pressure. Furthermore, the risk of boiling points in the network is eliminated.

The job of a distribution pump is to transport hot water from main heat sub-stations to the consumer installations, a task that demands intelligence as well as raw power. As heat consumption varies throughout the day, the ideal solution is a speed controlled pump that adapts to the fluctuating demand.

At Grundfos, we build intelligence directly into our pumps, which reduces the total cost of ownership drastically.


Hydro MPC

» 2-6 pumps in cascade » Easy installation and start-up » Large, user-friendly display » Energy-optimised control » Data communication » Perfect constant pressure » Application-optimised software

Hydro Multi-E

» Multi-master function » Pipe-filling function » Pre-defined setpoint » External set point influence » Limit-exceeded function


End suctionNK/G

» Dimensions according to EN and ISO standards

» Robust design » EN 12756 shaft seal » PN 10, 16, 25

In-line TP

» Low energy consumption » Easy dismantling for service » Simple installation » PN 10, 16, 25

pressure tank speed-regulated pump

Non-return valve

Grundfos CR Booster System The Grundfos CR Booster ensures that the flow and pressure of your system adapts to current demands, reducing your energy costs significantly. The system features a booster set fitted with motors with integrated frequency converters, allowing the booster system to maintain a constant pressure in the system and at the same time saves the space of large pressure holding tanks.

Grundfos TP 300 and 400 series Sturdy, reliable and efficient, the TP range of Grundfos pumps is built tomeet even the most demanding district energy conditions. The impeller ishydraulically and mechanically balanced to increase the life of the motor bearings and shaft seal. The inside of the pump is coated with Powercron® cathodic electro-coating and zinc phosphate which, together with the highly efficient IE3 Grundfos Blueflux® motor, keeps efficiency high throughout the lifetime of the pump.

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THE RIGHT CONNECTION

CONSUMER CONNECTIONS

Consumer connections are the final stop for heat energy in the district heating system. Consumers are the ones who ultimately benefit from the comfort and reliability of the right system.

Grundfos has a full range of solutions for all types of consumer connections: direct connections, indirect connections behind a plate heat exchanger, and connections in the form of a mixing loop. For direct connections, the sub-station regulates the pressure, but when it comes to indirect connections and mixing loops, system

performance and consumer comfort depend fully on the circulator.

Grundfos solutions offer a new and intelligent approach to district heating. Get complete control of your system and give consumers unparalleled comfort while resting assured that reliability is high and energy consumption lower than ever.


Magna3

» Low energy consumption » FLOWADAPT control mode

(a combination of AUTOADAPT mode and a new FLOWLIMIT function)

» Operating log » Energy monitor » Multi-pump function

TPE series 2000

» Designed for closed loop operation » Pre-fitted with differential pressure

sensor » Plug’n’pump » Built-in frequency-controlled

MGE motor

TPE Series 1000

» Designed for open or closed operation » Designed for coupling with any type

of external sensor » Built-in frequency-controlled MGE motor

MAGNA3 and Grundfos GO MAGNA3 is a full-range pump with intelligent control modes, optimised building management communication and a built-in heat energy meter. The MAGNA3 will automatically analyse the heating system and continuously adjust its operation to changes in demand. The result is high comfort and low energy consumption and worry-free operations. Combine the MAGNA3 with Grundfos GO – our 3-in-1 app designed to make your life easier and create tangible results. Grundfos GO features handheld pump control, full access to online tools and trouble-free data collection.

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CLEANING YOUR SYSTEM

WANT TO SAVE UP TO 50%?

WATER TREATMENT PUMPS GRUNDFOS ENERGY AUDIT

A healthy district heating system demands clean make-up and circulating water. To avoid corrosion and precipitation in your installations, the water must be de-mineralized and de-oxidized, free of mechanical impurities, and suitably alkalised with few chemicals.

As a full-line supplier of intelligent water treatment solutions, we cover the entire water cycle and ensure that each step is provided with the perfect water quality. Our range covers all district heating needs – from softening and de-mineralisation to de-oxidisation and alkalisation.

For district heating plants, minimal energy consumption is high on the agenda and a 30-50% reduction of pump energy usage means thousands of kWhs saved, as well as a drastic CO2 reduction. Grundfos has made savings like these very achievable with our pump audits and energy efficient pumping solutions.

Measure, analyse, advise

A pump audit is performed by Grundfos specialists based on a number of measurements. It focuses on the amount of hot water the pumps are handling and the flow variations during a relatively short and well-defined period. The Grundfos specialist measures and records the following in the system:

» Countable values e.g. flow and energy consumption » Analogue values e.g. pressure, temperature, water levels » Incident rates e.g. pump start/stop, valve open/close

The audit assesses the overall efficiency of a system’s pumps and proposes the needed changes that will improve efficiency. The proposals are supported by calculations of the savings to be made, the reduction in CO2 emissions, and the payback time on any investment.

Expect savings

Our energy audits are known to result in considerable savings on running costs as well as significant reductions to installation carbon footprint. Contact your Grundfos sales company to learn more.

CONEX

» Pre-assembled pH measuring and control system » Mounted on a base plate and wired ready for connection » Comes with prepared cable sets » Comes with temperature compensation

PUMP TYPE Q AND H RANGE DESCRIPTION

DDA

» Internal stroke-speed and frequency control » Advanced control features » FlowControl with selective fault diagnosis » Integrated flow measurement and AUTOFLOWADAPT

» 0/4-20mA and 2 relay outputs » Auto deaeration » Power supply 100-240 V, 50/60 Hz

DDE

» Internal stroke-speed and frequency control » Flexible range » Always full stroke length » Manual and pulse control » External stop and empty tank input » Power supply 100-240 V, 50/60 Hz

Save thousands of kWhs with Grundfos’ pump audits and energy efficient pumping solutions

Grundfos DDA SMART Digital The DDA SMART Digital dosing series offers impressive intelligence that goes beyond any existing pump technology on the market. The DDA is designed to inject chemicals and verify injection, measure valuable data such as flow or pressure, and diagnose the operation status. It will even make decisions to display and correct failures such as overpressure, valve leaks or air bubbles.

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GRUNDFOS HS CASE STORY

MEET THE GRUNDFOS

GIANTS180 MW OF DISTRICT HEATING FROM DANISH VERDO

When Verdo needed to replace its main pumps, the plant chose a solution that involved bigger pumps, lower supply-pipe temperature and guaranteed energy savings.

Verdo facts Verdo is a green energy provider based in Randers, Denmark. It is determined to be the greenest, most efficient energy provider in the country, which is why it is fuelled exclusively by biofuels in its CHP plant at Randers. Verdo is also one of the biggest traders in Europe within different types of biomass such as wood, cocoa pellets and olive stones.Capacity: Net 48 MW power and 140 MW thermal energy, plus 133 MW capacity in form of peak load / back up boilersCustomers: 54.000 power customers, 33.000 heating customers Pumps: With more than 80 pumps ranging from 0,12kW up to 630kW, pumps play a central role in the stability, reliability and efficiency of Verdo.

Grundfos pumps at VerdoMAIN PUMPS » 10 HS up to HS350-250-630/623

(2400m3/h-160m/630kW) » 2 NKG200-150-400/414 (740 m3/h /60m/110kW)

WATER SOOT BLOWER » 1 CR10-18 (10m3/h-180m-kW)

COOLING PUMP FOR SPREADER SYSTEM » 2 CR1S-3 (0,9 m3/h-18,2m-0.37kW)

MAKE UP WATER PUMPS FOR NETWORK AND BOILERS » 4 CR45-4 (45 m3/h-102,4m-15kW) » 4 CRE15-05 (17 m3/h-70,6m-4kW)

FIRE PUMP » 1 NB32-250 (25,3 m3/h-62,6m-11kW)

AIR-VENT PUMP » 2 TP170-100/4 (93 m3/h-15,4-5m,5kW)

LULL HEAT PUMPS » 2 MAGNA65-120F (39 m3/h-12m-0,9kW)

BIO-OIL PUMPS » 2 CRNE10-06 (10 m3/h-61,2m-2,2kW)

WATER TREATMENT SYSTEM » 4 UP20-45 (3,8 m3/h-4,2m-0,12kW) » 3 CRN5-5 (5,8 m3/h-33,5m-0,75KW) » 3 CRNE3-7 (3 m3/h-44,8m-0,55kW) » 4 KP » 1 CR 15-12 (17 m3/h-169m-11 kW)

DE-MISTER PUMPS » 4 CR32-5 (40 m3/h-102m-11kW)

The right main pumps

Main pumps are at the very heart of any district heating system and efficiency, strength and reliability is everything. When Verdo – a completely bio-fuelled CHP plant in Denmark – needed to replace its main pumps, the plant seized the opportunity to renew its fleet altogether.

Project Manager Jesper Thillemann Petersen was in charge of choosing the new solution, and he explains: “We supply district heating 365 days a year to more than 33.000 households, and our district is growing. We have a big responsibility towards existing customers, future customers and the environment. That means we have a very clear idea of what we want from our main pumps: extreme reliability, a strong track record, and a high hydraulic efficiency”.

The Grundfos solution

Grundfos was able to offer Verdo the perfect combination of size, reliability and efficiency. The plant was supplied with some of Grundfos’ largest HS pumps, complete with IE3 motors for high efficiency, top pull design for easy maintenance and double volute design for completely balanced hydraulics. The plant is now ready to supply the growing city of Randers with reliable, green district energy for decades to come.

The Grundfos deliveryPRODUCTS: » 10 HS and 2 NKG pumps » Combined capacity:

up to 9700 m3/h in PN25 » Motors: up to 630 kW

LOWER SUPPLY-PIPE TEMPERATURE: » Winter:

from 95 °C before replacement to 78 °C after replacement

» Summer: from 84 °C before replacement to 74 °C after replacement

INCREASED CAPACITY:Verdo’s thermal supply capacity has been increased from 40 MW to 60 MW to handle the expected growth of one of the many districts that Verdo serves with district heating.

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ADDITIONAL ADDRESS BOXXxxxxxxxx

SECONDARY ADDRESS BOX 1Xxxxxxxxx




GRUNDFOS Holding A/SPoul Due Jensens Vej 7DK-8850 BjerringbroTel: +45 87 50 14 00www.grundfos.com

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Grundfos is one of the world’s leading suppliers of solutions across the full range of pump applications – all the way from water supply to wastewater treatment .

In Grundfos District Heating, we think beyond the pump. We look at the entire system – from power plant to end user – to provide you with the most intelligent, reliable and adaptable solutions possible.

This approach has made us a preferred partner for district heating companies across the globe, and we look forward to helping you as well. To learn more go to

www.grundfos.com/districtenergy

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